Why put on safe for a transition to pistol?
Typically, wouldn't one only transition if the rifle was dead? So if dead, why safety?
Not always. I’ve transitioned to my handgun because my carbine was too long for the situation at hand.
Also, folks sometimes misread a stoppage or malfunction. I’ve seen a bolt lock back as if empty, while ammo was still in the magazine. Let the weapon hang in that situation, the bolt release could be activated against the shooter’s body or vest and chamber a round. Now the weapon is hanging, loaded, and on “fire”.
Depending on the stoppage or malfunction, the weapon may not be able to go to “safe”. I teach to make an attempt at it while transitioning.
If I’m not going to have at least one hand in control of the weapon, and I haven’t had time to 100% verify that it is empty or disabled, I’m going to place it on safe.